Home / 42,013.60-63,033.76-12,431.58

Finding the Fourth Proportional to 42,013.60, 63,033.76 and 12,431.58

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Solution

The fourth proportional to 42,013.60, 63,033.76 and 12,431.58 is: 18,651.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,013.60 : 63,033.76 = 12,431.58 : x
  2. Step 2: Convert to fraction form
    42,013.60/63,033.76 = 12,431.58/x
  3. Step 3: Cross multiply
    42,013.60x = 63,033.76 × 12,431.58
  4. Step 4: Simplify right side
    42,013.60x = 783,609,230.14
  5. Step 5: Solve for x
    x = 783,609,230.14/42,013.60
  6. Step 6: Final answer
    x = 18,651.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.